Cadwalader Ringgold:
Retief's War - Keith Laumer - cover artist Carlos Ochagavia
Cadwalader Ringgold:
Worlds of the Imperium - Keith Laumer
Cadwalader Ringgold:
Retiefs War - Keith Laumer
Cadwalader Ringgold:
Retief Emissary to the Stars - Keith Laumer
Cadwalader Ringgold:
Great Time Machine Hoax - Keith Laumer
Cadwalader Ringgold:
Retief! - Keith Laumer - edited by Eric Flint - cover artist Wayne Barlow
Cadwalader Ringgold:
Retief - Keith Laumer - edited by Aric Flint - cover artist Richard Martin
Cadwalader Ringgold:
The Long Twilight - Keith Laumer - cover artist Paul Lehr
Cadwalader Ringgold:
Zone Yellow - Keith Laumer - cover artist Tom Kidd
Cadwalader Ringgold:
Greylorn - Keith Laumer - cover artist Richard Powers